refactor(Extensions): add ToBytes shortcut method

EnvelopeGenerator.PdfEditor/Extensions.cs

@@ -1,54 +1,17 @@
-using iText.Kernel.Pdf;
-using iText.Kernel.Pdf.Canvas;
-
-#if NETFRAMEWORK
+#if NETFRAMEWORK
 using System.IO;
-using System;
 #endif
 
 namespace EnvelopeGenerator.PdfEditor
-#if NET
-    ;
-#elif NETFRAMEWORK
 {
-#endif
-
     public static class Extensions
     {
-        #region Edit PDF document
-        public static TStream Edit<TStream>(this TStream inputStream, Action<PdfDocument> edit)
-            where TStream : Stream, new()
-        {
-            using (var outputStream = new TStream())
-            {
-                using (var pdfDoc = new PdfDocument(new PdfReader(inputStream), new PdfWriter(outputStream)))
-                {
-                    edit(pdfDoc);
-                }
-                return outputStream;
-            }
-        }
-
-        public static byte[] Edit(this byte[] pdfBytes, Action<PdfDocument> edit)
-        {
-            using (var inputStream = new MemoryStream(pdfBytes))
-            {
-                return inputStream.Edit(edit).ToArray();
-            }
-        }
-        #endregion
-
-        public static byte[] Design(this byte[] pdfBytes, params (int pageIndex, Action<PdfCanvas> design)[] pageDesign)
-            => pdfBytes.Edit(doc =>
-            {
-                foreach((int pageIndex, Action<PdfCanvas> design)  in pageDesign)
-                {
-                    var page = doc.GetPage(pageIndex);
-                    var canvas = new PdfCanvas(page);
-                    design(canvas);
-                }
-            });
+        /// <summary>
+        /// Writes the stream contents to a byte array, regardless of the System.IO.MemoryStream.Position property.
+        /// </summary>
+        /// <typeparam name="TPdf"></typeparam>
+        /// <param name="pdf"></param>
+        /// <returns>A new byte array</returns>
+        public static byte[] ToBytes<TPdf>(this TPdf pdf) where TPdf : Pdf<MemoryStream, MemoryStream> => pdf.OutputStream.ToArray();
     }
-#if NETFRAMEWORK
-}
-#endif
+}